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India-Eurasian collision vs. ocean-continent collision

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Acta Seismologica Sinica(English Edition) 2007年第1期20卷 1-10页

作者：曾融生吴庆举丁志峰朱露培 Institute of Geophysics China Earthquake Administration Beijing 100081 China Department of Earth and Atmospheric Science Saint Louis University Missouri 63103 USA

Ample observational evidence shows that there is a northward crustal subduction zone underneath the Yarlung Zangbo suture between India and Eurasia. It penetrates Moho to a depth of about 100 km. There are probably multiple such crustal subductions under the Himalayas. They are different from lithosphere subduction during oceanic collisions. The detected slabs in the upper mantle north of the Yarlung Zangbo suture can be interpreted as remains of the Indian Plate＇s mantle lithosphere. In contrary to ocean-continent subduction, the mantle lithosphere is de- laminated from the crust as the Indian Plate subducts underneath Eurasia. Existing structural images of the crust and upper mantle of the Tibetan Plateau reveal that there were both northward and southward subductions over different geological period, causing some seismic velocity annmalies around those subduction zones.

关键词： India-Eurasian collision ocean-continental collision delamination

Post-subdution evolution of the Northern Lhasa Terrane, Tibet: Constraints from geochemical anomalies, chronology and petrogeochemistry

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China Geology 2022年第1期5卷 84-95页

作者： Shi-mian Yu Xu-dong Ma Yan-chun Hu Wei Chen Qing-ping Liu Yang Song Ju-xing Tang Geological Museum of Guizhou Guiyang 550081China MNR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China No.1 Institute of Geology and Mineral Resources of Shandong Province Jinan 250014China

Bangong-Nujiang collisional zone(BNCZ)is an older one in Qinghai-Tibet Plateau and resulted in the famous Bangong-Nujiang metallogenic belt,which plays an important role in evaluating the formation and uplift mechanism of *** northern and central Lhasa Terrane composed the southern part of the *** ore deposits can be used as markers of geodynamic evolution,the authors carried 1∶50000 stream sedimental geochemical exploration in the Xiongmei area in the Northern Lhasa Terrane to manifest the mineralization,and based on this mineralization with geochemical and chronological characteristics of related magmatic rocks to constrain their geodynamics and connection with the evolution of the Lhasa *** authors find Early Cretaceous magma mainly resulted in Cu,Mo mineralization,Late Cretaceous magma mainly resulted in Cu,Mo,and W mineralization in the studying *** results suggest a southward subduction,slab rolling back and break-off,and thickened lithosphere delamination successively occurred within the Northern Lhasa Terrane.

关键词： Bangong-Nujiang collisional zone Geochemical anomalies Mineralization Slab rolling-back/break-off delamination Northern Lhasa Terrane Geological survey engineering Tibet

Interface properties and failures of REBCO coated conductor tapes:Research progress and challenges

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Superconductivity 2023年第4期8卷 53-68页

作者： Peifeng Gao Yameng Zhang Xingzhe Wang Youhe Zhou Key Laboratory of Mechanics on Western Disaster and Environment Ministry of EducationCollege of Civil Engineering and MechanicsKey Laboratory of Special Function Materials and Structure Design of Ministry of EducationLanzhou UniversityLanzhou 730000China

RE‐Ba‐Cu‐O(REBCO,where RE=Y,Gd,Sm,and other rare earth elements)coated conductor(CC)tapes are promising for applications in high‐energy physics and high‐field science owing to their significant advantages such as high critical magnetic field,high current density,and the ability to achieve superconductivity at liquid nitrogen ***,the mechanical and superconducting performances of these CC tapes are significantly affected by interface failures,such as interfacial delamination and coating fractures,which arise from the complex interplay of mechanical stress induced by magnet processing,thermal mismatch stress during cooling,electromagnetic stress under high magnetic fields,and thermal stress during *** study comprehensively reviews the interface properties and failure behavior of REBCO CC ***,the research progress in characterizing the intricate interface properties of REBCO CC is systematically ***,the interface failure behavior in extreme multifield environments was analyzed and ***,this study outlines optimization strategies to mitigate interface failure risks in REBCO superconducting magnet ***,we address the current challenges and future perspectives on interface issues in REBCO CC *** addressing these challenges,this study offers valuable insights for advancing the development and practical implementation of superconducting technologies in diverse applications.

关键词： REBCO coated conductor tapes Interface properties delamination Electro‐mechanical degradation Optimization

Mortarless structures based on topological interlocking

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Frontiers of Structural and Civil Engineering 2012年第2期6卷 188-197页

作者： Arcady V.DYSKIN Elena PASTERNAK Yuri ESTRIN School of Civil and Resource Engineering The University of Western AustraliaCrawley WA 6009Australia School of Mechanical and Chemical Engineering The University of Western AustraliaCrawley WA 6009Australia Centre for Advanced Hybrid Materials Department of Materials EngineeringMonash UniversityClayton VIC 3800Australia

We review the principle of topological interlocking and analyze the properties of the mortarless structures whose design is based on this *** concentrate on structures built of osteomorphic blocks-the blocks possessing specially engineered contact surfaces allowing assembling various 2D and 3D *** structures are easy to build and can be made *** are flexible,resistant to macroscopic fractures and tolerant to missing *** blocks are kept in place without keys or connectors that are the weakest elements of the conventional interlocking *** overall structural integrity of these structures depends on the force imposed by peripheral *** peripheral constraint can be provided in various ways:by an external flame or features of site topography,intemal prestressed cables/tendons,or self-weight and is a necessary auxiliary element of the *** constraining force also determines the degree of delamination developing between the blocks due to bending and thus controls the overall flexibility of the structure thus becoming a new design parameter.

关键词： topological interlocking fragmented structures segmented structures constraint delamination bending stiffness

Optimization of AWJM Process Parameters on 3D-Printed Onyx-Glass Fiber Hybrid Composite

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哈尔滨工业大学学报:英文版 2023年第2期30卷 84-98页

作者： Dharmalingam G Arun Prasad M Deepak Panghal Sachin Salunkhe Siva kumar M Rathinasuriyan C Department of Mechanical Engineering Vel Tech Rangarajan Dr.Sagunthala R&D Institute of Science and TechnologyAvadiChennai-600062Tamil NaduIndia Department of Fashion Technology National Institute of Fashion TechnologyNew Delhi-11016India

Compared with conventional manufacturing methods, the additive manufacturing technique enhances mechanical properties. The present investigation of additive manufacturing technique is focused on delamination studies of Onyx-Glass Fiber Hybrid Polymer Composite(OGFHPC) along with surface roughness properties during machining(drilling) of composites through abrasive water jet machining(AWJM). However, delamination is a major issue during machining of OGFHPC. In order to overcome these drawbacks, the fabrication of OGFHPC was carried out using fused deposition modeling(FDM) technology which is an additive manufacturing method with Mark forged Mark Two 3D-composite printer. The machinability studies were conducted for drilling operation through AWJM process with different abrasive mass flow rates, drilling diameters and traverse speeds. These drilling machinability process parameters were optimized through the design of experiments-Taguchi analysis followed by the analysis of variance(ANOVA) and validated through the Harmony Search Algorithm(HSA), Whale Optimization Algorithm(WOA) and Grey Wolf Optimization Algorithm(GWO). It was observed that minimum delamination and surface roughness of OGFHPC were optimized for AWJM at abrasive mass flow rates(450 g/min), drilling diameters(12 mm) and traverse speed rate(30 mm/min).

关键词： Onyx-Glass composite fused deposition modeling AWJM delamination surface roughness Taguchi analysis

Effects of ultrasonic bonding parameters on reliability of flip chip GaN-based light emitting diode

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Journal of Shanghai University(English Edition) 2011年第4期15卷 262-266页

作者：杨连乔袁方张建华 Key Laboratory of Advanced Display and System Application (Shanghai University) Ministry of Education School of Mechatronics Engineering and Automation Shanghai University

This work applied the ultrasonic bonding to package flip chip GaN-based light emitting diodes （flip chip LEDs） on Si substrates. The effects of ultrasonic bonding parameters on the reliability of flip chip GaN-based LED were investigated. In the sequent aging tests, samples were driven with a constant current of 80 mA for hundreds hours at the room temperature. It was found that the electroluminescence （EL） intensity variation had a large correlation to the ultrasonic power, and then to the bonding temperature and force. A high bonding temperature and ultrasonic power and a proper bonding force improved the EL intensity significantly. It was contributed to a strong atom inter-diffusion forming a stable joint at the bonding interface, The temperature fluctuation in the aging test was the main factor to generate a high inner stress forming delamination at the interface between the chip and Au bump. As a result, delamination had retarded the photons to emit out of the LED packaging and decay its EL intensity.

关键词： light emitting diode (LED) flip chip LED electroluminescence (EL) intensity ultrasonic bonding delamination

Application of the Blister Test in Study of Epoxy Adhesive

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材料科学与工程学报 2000年第Z2期20卷 804-810页

作者： Fei Xiong Industrial Research Institute Swinburne (IRIS) Hawthorn Melbourne Australia Gintic Institute of Manufacturing Technology Singapore 63875

Shaft-loaded blister test technique is used as an effective quantitative tool to measure adhesion strength. Investigation on conductive adhesive was done by modified blister test. It is found that shaftloaded blister test can be a good solution for the debonding of thin film adhesion. The intrinsic stable interface debonding process has been proved an attractive alternative to the conventional adhesion measurement techniques. In our study, epoxy matrix adhesive was studied using blister test technique in comparison with the traditional test-lap shear test. Adhesion strength was studied as a function of surface treatment and the metallization of substrate. It was found that surface conditions of substrate have significant impact on adhesion behaviour. The oxidation of surface is responsible for the poor adhesion. Activating chemical treatment and Plasma cleaning on substrate surface has been found to be a way of dreamatically improving adhesion strength of electronic conductive adhesive.

关键词： blister test delamination debonding pre-creack adhesion

Rheological Strength of UHP Eclogite from Dabieshan: Evidences from High p-T Experiments

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Journal of Earth Science 2001年第3期 3-8页

作者： Zhang JunfengGraduate School, China University of Geosciences, Wuhan 430074 Institute of Geophysics & Planetary Physics, University of California, Riverside, CA 92521, USAJin ZhenminFaculty of Earth Sciences, China University of Geosciences, Wuhan 430074

We present here experimental study of the rheological properties of UHP eclogite from Dabie at a pressure of 3 GPa by utilizing the 5 GPa Griggs type piston cylinder apparatus. The rheological constitutive equation of eclogite is determined with a stress exponent of 3.4, an activation energy of 480 kJ/mol and a preexponential factor of 103.3. Our!study shows that: (1) As a typical two phase rock, the flow strength of eclogite depends on the proportions of the strong phase (garnet) and the weak phase (omphacite); (2) The plastic deformation of eclogite is dominated by dislocation creep; (3) Based on that eclogite has the same strength as the upper mantle harzburgite, our study suggests that the delamination of the subducting crust component from the underlying upper mantle is unlikely. Therefore, the stretching after the collision orogeny coupled with the upwelling of the upper mantle may play a more important role in the exhumation of UHP rocks.

关键词： UHP eclogite rheological strength dislocation creep high p T experiment delamination Dabieshan.

The Extensional Tectonics and Retrometamorphic Processes Subsequent to the High-Pressure and Ultrahigh-Pressure Metamorphic Events in Dabie-shan,China

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Continental Dynamics 1998年第Z1期 65-73页

作者： YOU Zhendong 1) , SUO Shutian 1) , ZHONG Zengqiu 1) , ZHANG Zeming 2) , WEI Bize 1) 1) China University of Geosciences, Wuhan, 430074, China 2) Institute of Geology, CAGS, 26 Baiwanzhuang Road, Beijing 100037, Ch

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关键词： crustal extension ultrahigh pressure metamorphism decompressive retrograde metamorphism delamination underplating